Multiple-socket electric plug



l. F. GILES MULTIPLE SOCKET ELECTRIC PLUG Filed Feb. 13. 1925 Nov. 29, 1927.

. IMPM/ufo@ attozumw Patented Nov. Z9, 1.92.7.

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ISAAC F. GILES, OF YONKERS, NEV YORK, ASSIGNOR TO ILEITE ELECIBC IVIATUEAC- TUBING CORPORATION, OF TUCKAHOE, NEW YORK, CORPORATION OF NEVI YORK.

MULTlPLE-SOCKET ELECTREC PLUG.

Application filed February This invention pertains to multiple socket electric iixtures and particularly to a twoway socket, `wherein the casing comprises molded electrical insulating material. One ont the ditiiculties arising trom the manufacture ot fixtures having molded casings is the liability ci the casing to crack, particularly.

in the region adjacent the metallic parts which are embedded within the casing during the 'forming operation. r1`he present invention is directed toward the provision ot ar fixture which overcomes the diiiiculties arising during the maimtacture ot a molded casing, and which tends 'to reduce the percentage ot breakage during the manufacturing operation.

The preferred 4form for carrying outmy invention is illustrated in the draw-ings wherein Fig. 1 is a plan view ot an electric fixture embodying my invention; Fig. 2 is an end elevation ot the nature shown in 1; Figs. 3 and 4t are sections taken on planes indicated by the lines 3--3 and 11-11 respectively in Fig. 2; Fig. 5 is a perspective View illustrating an electrical connecting piece, and Fig. 6 is a perspective View showing portions of the fixture removed trom the casing.

'l have illustrated my invention in connection with a casing 10, of electrical insulating material, molded to the desired shape. As shown, however, the casing has outwardly Afacing openings 11 and 12 in the nature oit' sockets which are separated by a wall 13 which is integral with the casing. The casing also has passageways Maud 15 which lead outwardly from the openings 11 and 12 respectively, and has a passageway 9 which extends through the wall 13 and provides communication between the sockets 1 1 and 12.

Electric current may be brought into the casing through contact members 16 and 17 which have opposite polarity and are shown extending into the passa'geways 14 and 15 respectively and as projecting beyond the outer surface of the easing. As indicated, a part of the member 16 is exposed within the socket 11 and is electrically connected by a member 18 to a threaded shell or socket 19. he socket preferably sets closely within the pocket.

A socket 2O similarly formed to the socket plate 21 may be positioned by inserting it "f" eudwise into the passageway 8 throughthe pocket opening 12 before the socket member 2O is inserted within the casing. The ends of the plate 21 therefore engage the outer surtnces of thc socket members and are prerented trom moving out ot the casing by reason ot' the tact that the yieldable ends of the plate 21 engage the corrugated outer surtace ot the socket members.

The socket member 19 is prevented from rotating within the casing by the connection 18 between the member and the blade 16. Accordingly to prevent the socket member 20 vfrom rotating within the casing I have shown the casing as having a lug 211 which projects into an opening within the flange portion 26 ot the member 20.

he member 17 has a polarity opposite to that ot the plate 16. Accordingly the plate 17 must be electrically insulated from. the socket members 19 and 20. To this end I have shown a sleeve 30 which is embedded within the wall 18 in such manner that the axis of the sleeve is substantially aligned with the axis of the socket members 19 and 20 respectively. The interior ot the sleeve is threaded to receive contact screws 31 and 32, the heads ot which extend into the respective socket members and are electrically insulated therefrom. T he screw heads theretore form one terminal while the socket members form. another terminal for each outlet.

. From the foregoing description it will be evident that my invent-ion provides a twon way socket which obviates the necessity for embedding metallic parts within the casing during the moulding operation. This has a tendency to reduce the loss resulting from breakage of the casing during facture thereof.l It will further be evident the manu* 1 (Sil that a device made in accordance with my invention is quite simple in construction and is durable in use.

Having thus described my invention, I claim:

1. ln a device of the character described, the colnbination with a casing comlinising electrical insulating material having pockets opening outwardly from the ends thereof, and havin" an integral wall disposed intermediate the pockets, there being a passageway leading from each pocket, a threaded socket mounted within each pocket, a contact blade mounted fn each passageway, means respectively connecting one of the sockets to one of said blades. and a yieldable electric conductor for providing au electrical connection between said sockets. and central contacts within the sockets electrically connected with the other blade.

2.1111 a device of the character described, the combination with a easing comprising electrical insulating material having substantially cylindrical pockets opening outwardly therefrom, the axis of one pocket being aligned with the axis oit the other pocket. there being a wall separating the pockets, a passageway leading through the casing from each pocket, a contact blade in each passageway, a socket member in each pocket, said casing having a passageway ott-set from the pocket and providing communication therebetween, a connecting member having yieldable ends engaging the respective socket members to provide an electrical connection therebetween, means for electrically connecting one of the blades to one of the socket members. base terminals electrically connected to the other blade, and means t'or insulating the last mentioned blade trom said socket members.

3. In a device of the character described, the combination with a casing having -pockets therein` said pockets opening in opposite directions and being substantially in alignment, said casing having a passageway of set from the pockets and providing comnm n`cation therebetween, a socket member disposed in each pocket, and a spring metal current carrying member disposed in said passageway and providing an electrical connection between the socket members.

Lt. In a device of the character described, the combination with a casing ba ving ockets therein opening outwardly and having a passageway providing communication between the pockets, a socket member disposed in each pocket'. and a contact; strip disposed in the passageway, said strip having the ends thereof turned to back upon itself, the ends of said strip beingr in engagement with the outer surfaces ot the socket members, whereb v movement ot the strip with reference to the members is prevented, said strip functioning to provide an electrical connection between said members.

In testimony whereof I hereunto atlix my signature.

ISAAC F. GILES. 

